Float-detecting mechanism for looms



FLOAT DETECTING MECHANISM POR LOOMS.

Patented Dec. 8, 1885.

WITNESSES -Li=hugmphul, Washingmm o. c.

2 Sheets-Sh eet 2 (No Mod e l.)

A. MALLORY.

FLOAT DETECTING MECHANISM F03 LOOMS. 7 No. 331,897. 4 Patented Dec. 8,1885.

z JJV VEJVTOR filter/Lays N. PETERS. Phuwuxhu mphar. Washingim DvC,

Nrrnn TATES ATENT @Fl iiCiFs AMOS MALLORY, OF MYSTIC BRIDGE, CONNECTICUT.

FLOAT-DETECTING MECHANISM FOR LOOWIS.

SPECIFICATICN forming part of Letters Patent No. 331,897, dated December 8, 1885.

Application filed February 16, 1884. Serial No. 120.975. (N0 model.)

To all whom it may concern:

Be it known that I, Amos MALLORY, a citizen of the United States, residing at Mystic Bridge, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Float-Detecting Mechanism for Looms, of which the following isasper iiication, reference being had to the accompanying dr'awings.

Figure 1 is a plan view of a loom embodying my improvements. Fig. 2 is a vertical section taken on the line 5cm in Fig. 1. Fig. 3 is a vertical section taken on the line 3 y in Fig. 1; and Fig. 4 is a vertical section on the line z z in Fig. 1, showing the posit-ion of the comb and its attendant mechanism when the loom is thrown out of gear. Fig. 5 is a detail view.

This invention has relation to loomsjandgitconsists in the novel construction and arrangement of parts constituting a stop-motion for throwing the loom out of operation when a float occurs in the warp, as will be hereinafter fully described, and particularly pointed out in the claims appended.

A serious trouble met with in the operation of all looms,in weaving the various kinds of cloth to which they are adapted,is the formation of floats in the cloth-that is to say, if a thread breaks in the warp it will kink up back of the lathe and hold the threads of the shed together, and causes the shuttle, instead of passing properly through the shed, to pass over or under the wrong threads of the tangled warp, thereby producing floats, or imperfect places in the cloth.

My object is to prevent the formation of floats in the cloth, and the accompanying illustration, hereinafter described, shows my means for accomplishing the result.

Referring by letter to the accompanying drawings,A designates the frame of the loom, A the lathe of the loom, and 13 a comb. The lathe A is operated by the crank-shaft J con nected to the lathe-arms by rods in the usual manner, as shown. The shipper-handle K, by which the loom is started and stopped automatically, is also of the ordinary construction, and when automatically shifted, as hereinafter explained, throws the driving-belt onto the idler-pulley and stops the loom motion, as usual.

The lower bar,B,of the lathe A is provided near each end with bearingarms CG, consisting of horizontal rearwardly-cxtending arms provided each with a vertical fork,c, the arms of which are beveled on their inner'npper edges, and having each a vertical perforation, d. The ends of the comb-shaft 6 rest in the forks c c of these bearing-arms, the portionsf, resting therein, being made rectangular in form, in order that the comb may not turn while its shaft rests or remains below the bevels g of the forks. Sear the inner faces of the forks c 0, depending arms it h are hung to the comb'shaft c, said arms being passed down through the vertical perforations d of the bearing-arms C C, being encircled by spiral springs 71 1 and being provided with shoes E E at their lower ends. The spiral springs c 13 have their bearings against the lower faces of the bearing-arms C C and the upper faces of the shoes E E, and normally hold the ends of the comb-shaft in the bases of the forks c 0.

F designates a cam-shaft having hearings in the lathe-arms below the combshaft. The cams is k are located directly under the shoes E E on the depending arms h 7!. Near one end this shaft F is provided with a ratchetwheel, H, fixed to said shaft and engaging a spring pawl, Z, on the bearing-plate m, secured to the lathe-arm at that end of the loom.

To the under face of the upper rail, n, of the loom-frame is secured a bearing, 0, provided with a pivoted feed-pawl, 3), one end of which rests loosely in a log, 19, the other end being arranged to engage the ratchet-wheel H on the shaft F, after passing through a forked guide, p". To the back of the comb Bis secured a depending angle-arm, Q, the inclination of the angle being toward the front of the loom. To the under face of the breast-beam r of the loom-frame is pivoted a lever, L, which extends beyond the right-hand end of the loom-frame, and is intended to engage the shipper-handle K at the proper time to release itfrom its notch and permit it to shift the driving-belt onto the idler to stop the loom. This shipper-handle is operated by a spring, K, in the ordinary manner.

At each revolution of the shaft J the shuttle passes through the shed, and the ratchet-wheel on the cam-shaft F is turned one notch by the feed-pawl. The revolutions of the shaft J or pick are continued until the cams 7: 7c come in contact with the shoes E E on the depending arms h h and push the comb up into the warp. If there is no entanglement of the threads of the warp, the teeth of the comb will pass forward with the lay through the warps without meeting with resistance, and the comb will drop back to its original position in the forks c c. If, however, there are threads broken, which tangle in and hold the threads of the shed together as the harnesses are worked, and thereby cause a float in the cloth, the comb B, in passing forward through the warp, will comein contact with thesnarland willbeturned back in the upper portions of theforks c c, which operation will raise the angle-arm Q, connected to the back of the comb B, to such a position that when the lathe comes forward the anglearm Q will strike the pivoted lever L, which acts on the shipper-handle K, thereby releasing the shipper-handle K and throwing the belt onto the idle-pulley, thus stopping the loom to permit the warp to be mended.

The devices are very simple in their construction and operation, do not add materially to the cost of the loom, and indicate positively when a float is about to be formed in the cloth, thereby rendering it possible to prevent such formations.

Having thus full y described my invention,

what I claim as new, and desire to secure by Letters Patent of the United States, is

1. The combination of the lathe having the bearing-arms G 0, provided with the vertical arms, with the comb having its shaft provided with rectangular portions near its ends, and thereby adapted to be received between the vertical arms of the bearing-arms O O, the angle-arm Q, the camshaft F, having the cams and the ratchet-wheel, the holdingpawl engaging with the ratohet-wheel, the depending arms h,hung to the comb-shaft, and having the bearing-springs z, the feed pawl, trippinglever, and shipp,er-handle, substantially as described.

2. The combination of the lathe having the bearing-arms CO, with the pivoted comb having the depending arms hung to its shaft, bearing-springs for said arms, and the anglearm secured to the back of the comb, the lever L and shipper-handle, the cam-shaft having the cams and the ratchet-wheel, the holdingpawl, and the feed-pawl for moving the ratchet-whecl, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

Y AMOS MALLORY. Witnesses:

ALLEN AVERY, LEMUEL CLIFT. 

